.... to the subject of the laser. A laser is made up of COHERENT light, a special kind of light in which the wavelengths of the light are all the same length, and the crests of these waves are all lined up, or in PHASE. The word Laser is an acronym for Light Amplification by Stimulated Emission of Radiation. What does that mean? Basically a laser is a device which produces and then amplifies light waves and concentrates them into an intense penetrating beam. The principles of the laser (and it's cousin the maser) were established long before these devices were successfully developed. In 1916 Albert Einstein proposed stimulated emi .....

.... and nearly criminal , the result of greed. Lame Deer complains that the white men "have not only despoiled the earth, the rocks, the minerals, all of which they call ‘dead' but which are very much alive; they have even changed the animals, which are a part of us, part of the Great Spirit, changed them in a horrible way, so no one can recognize them" (Erodes 209). On the other hand, conservatives frequently label environmentalists as extremists who despise almost all of capitalism's practices regarding ecology. That is, some extremist defenders of the profit motive name call, terming environmentalists "vandals" (Huber2 1) who prefer "f .....

.... and Flying Sources' would have never existed. I however don't believe that living cells of any kind have ever existed in this solar system apart from on earth. I do see the possibility that maybe other solar systems is our solar system in history which is an interesting thought. Just because NASA has found a single cell living creature in a meteorite doesn't prove anything in my mind. Especially because of the fact that it has been on earth for 12 years when over this time the cell could have attached itself to the meteorite. Nobody knows enough about the subject to start telling the public that this is true, they should have never rele .....

.... two tails. One tail is made from dust particles and the other, called ion tail, is made gases. As a comet approaches the sun, the frozen gas becomes unfrozen which causes the dust particles to become free. Light pressure from the sun and some other forces cause these materials to move away from the head of the comet and in the opposite direction from the sun. According to Charles A. Schweighauser in his book, entitled Astronomy from A to Z: A Dictionary of Celestial Objects and Ideas, he states that we see comet heads and tails because they not only reflect sunlight, but they also fluoresce—give off their own light—when are near t .....

.... while relieving the discomforts of many health problems. Aromatherapy also acts on the central nervous system, relieving depression and anxiety, reducing stress, relaxing, uplifting, sedating or stimulating, restoring both physical and emotional well-being. Although Aromatherapy is consider to be a new and alternative foram of medicine in the western world, however it has been practiced for thousands of years in the eastern world. A lot of interest in Aromatherapy stems from its use as an 'alternative medicine' or even a 'complementary medicine'. It is certainly true that before pharmaceutical companies brought a vast array of modern .....

.... town of Donora, Pennsylvania, which sits in a valley, had twenty deaths, and nearly 6,000 residents, or 40% of the population, suffered respiratory problems (Edelson 25, 26). New York experienced several killer smogs, which in a later analysis attributed, from the usually severe pollution, 58 deaths (Edelson 26). Not only in the United States are health problems caused by air pollution showing up, but they are also showing up in other parts of the world, like Europe. In 1930, in Belgium's Meuse River valley, a major industrial region, where the primary fuel was coal reported sixty deaths, and about 6,000 residents of the valley became il .....

.... fifteen feet. They are almost devoid of hair, except for some whiskers on their face, and they have internal ears on the sides of their head. Their nostrils are closed by valves, so they can accomplish such feats as flips and quick turns without losing any air. Manatees have no hind legs, but instead one big, flat, spatula-like tail (Sentman 327). This feature made people confuse manatees with mermaids for nearly four centuries (O'Shea 66). Many biologists say that manatees possibly originated or evolved from ungulates such as elephants and cows because of the way that they are built, and certain features that they have in common. Like elep .....

.... cell. The media and the press ignored this fact, and thus claimed that Dolly and her “mother� were genetically identical, which sparked a fury of outcry all around the world. The technique of transferring a nucleus from a somatic cell into an egg cell of which the nucleus had been removed, called nuclear transplantation, is an extension of research that had been ongoing for over 40 years. Up until now, scientists thought that adult cells could not be “reprogrammed� to behave like a fertilized egg and create an embryo, but the evidence obtained by Dolly’s success prove otherwise. The issues of cloning have been around fo .....

.... cling wrap, fishing line, bait bags, and floats. The second highest cause of water pollution is ship waste. Ships used to take much garbage with them on their ships and dump them. This was very common until the government took action. They were giving sailors up to one million dollars fines for disposing waste. Because of that, ships now carry less garbage with them. Animals are not the only thing being harmed by water wastes. Fishing lines, rope, and plastic nets are being caught in the rutter and the engine, but the ships are not exactly perfect. The other main cause of water pollution is industrial waste. Industries do not be harme .....

.... above and lighter or grayish below. The eyes are small and the nostrils closable. The skull is massive, with marked ridges for fixing the muscles that work the jaws. The two front teeth on either jaw are like those of other rodents, wearing away more rapidly behind so as to leave a sharp, enameled chisel edge. With these can cut down large trees. It usually selects trees 5 to 20 cm (2 to 8 in) in diameter, but it can fell trees with diameters as large as 76 cm (30 in). Beavers have a pair of anal scent glands, called castors, that secrete a musklike substance called castoreum, probably for marking territories. The animals tend to be mo .....